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首页> 外文会议>Health,safety and environment in oil and gas exploration and production >Highly Inhibitive, Low-Salinity Glycol Water-Base Drilling Fluid For Shale Drilling In nvironmentally Sensitive Locations
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Highly Inhibitive, Low-Salinity Glycol Water-Base Drilling Fluid For Shale Drilling In nvironmentally Sensitive Locations

机译：用于环境敏感地区的页岩钻井的高抑制性，低盐度乙二醇水基钻井液

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摘要

Water-base drilling fluids containing glycol additives havernbecome established for cost-effective drilling of many reactivernshale formations. Existing fluids function most effectivelyrnwhen the glycol is used in conjunction with moderate to highrnlevels of sa potassium chloride is most commonly used,rnalthough this can sometimes be replaced by sodium or calciumrnchloride or by more expensive acetate or formate salts.rnIn many onshore locations, discharge of saline drillingrnwastes poses environmental problems because ofrncontamination of groundwater and soil which may make thernwater unsuitable for drinking or irrigation and agriculture. Inrnthese situations, either expensive pollution control measures orrnlow-salinity drilling fluids are required. Unfortunately, thernglycols in common use for shale control do not function wellrnin salt-free or low-salt fluids, so their benefits cannot be fullyrnexploited in these environmentally sensitive areas.rnThis paper discusses the technical performance andrnenvironmental benefits of a new class of glycol inhibitors,rnspecifically designed to provide high levels of shale inhibitionrnin freshwater and low-salinity water-base drilling fluids. Wasterndisposal implications are considered and inhibitive propertiesrnare compared with other currently available fluids.
机译：已经建立了含有乙二醇添加剂的水基钻井液，以用于许多反应性页岩地层的经济有效的钻井。当乙二醇与中等至高水平的盐一起使用时，现有液体最有效地发挥作用。氯化钾是最常用的，尽管有时可以用氯化钠或氯化钙或更昂贵的乙酸盐或甲酸盐代替。在许多陆上位置，由于地下水和土壤的污染，盐水排放造成了环境问题，这可能使地下水不适合饮水，灌溉和农业。在这种情况下，需要昂贵的污染控制措施或低盐度钻井液。不幸的是，通常用于页岩控制的乙二醇在无盐或低盐的流体中不能发挥良好的作用，因此在这些对环境敏感的领域中不能充分利用它们的益处。本文讨论了新型乙二醇抑制剂的技术性能和对环境的益处，专门设计用于在淡水和低盐度水基钻井液中提供高水平的页岩抑制作用。考虑了废物处理的含义，并与其他目前可用的液体进行了比较。

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